What are the potential security risks of using outdated PHP functions like eregi() for email validation?

Using outdated PHP functions like eregi() for email validation can pose security risks as these functions are deprecated and no longer supported in newer PHP versions. This can leave your code vulnerable to potential exploits and attacks. To mitigate this risk, it is recommended to use newer and more secure functions like filter_var() with the FILTER_VALIDATE_EMAIL filter for email validation. 

$email = "example@example.com";

if(filter_var($email, FILTER_VALIDATE_EMAIL)) {
    echo "Valid email address";
} else {
    echo "Invalid email address";
}

Keywords

security risks outdated PHP functions eregi() email validation

Related Questions